Head choice for stock bottom end lq4 - LS1TECH - Camaro and Firebird Forum Discussion



Head choice for stock bottom end lq4

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Old 11-28-2017, 08:36 AM   #1
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Default Head choice for stock bottom end lq4

Ok so I just fininhed swapping the lq4 into the ta. As of now it has a torquer 2 cam and circle d 3200 stall. I honestly think the car is slow and a turd and i am not happy with it, I know I'm on the lower compression side now and most of everyone is saying to just do a 408 but that is no where in my cards as I daily my trans am and don't have the budget to build it the way I would want.

I plan on trying to go forced induction down the road with a good boost cam as well. I just haven't found a kit I feel will work with how I daily drive. I looked at supercharger but I do not want to cut the cowl and possibly not have do shield wipers. Procharger wise I don't like the low mount setup. I looked at the turbo speed turbo kit to retain ac but I keep tho king I'll run into a heating issue with how close it puts the turbo to the radiator since I'll be driving it 200 miles at a time from here to there.

Now for head choice I had planned on prc stage 2.5 5.3 heads. But I Then saw some Frankenstein head work and like them to. I would try square port but then I need to do intake and all the other good and then I worry about ptv clearance when having the heads milled to up compression. Thoughts on what head i should go for. I'm gonna be pulling the trigger in January and just haven't been able to find much help on the matter.
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Old 11-28-2017, 07:54 PM   #2
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What heads are on it now? 317s? If so 243's can be had fairly cheap and would give you a nice bump in compression and would make the car drive much better...
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Old 11-28-2017, 08:00 PM   #3
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If those are the stock LQ4 heads and you're gonna boost it later on, then i'd just keep them
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Old 11-28-2017, 11:10 PM   #4
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You are always on here looking for the magic way to make HP. Simply put, it takes money. Several thousand dollars to make a decent combo. That is weather you boost it or do an NA build. An LQ4 is going to be a turd just like a 5.3 W/O boost. An LQ9 will do great but costs more money up front. You can do a really cheap turbo build but it won't be easy or reliable. I think your best bet would be to get a different daily to begin with and go from there. I'm not trying to be a dick but it is what it is. Cheap, fast and reliable...you only get to pick two.
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Old 11-29-2017, 06:01 AM   #5
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I fairly post on here. And lately it was for troubleshooting that no one really helped solve. I know to make power you need to spend money. You say get another daily. That's fine and dandy if you can find one that's not a shitbox that won't cost me an arm and leg on insurance. I have 3050 in just getting the trans am back running. Keep in mind I was daily driving a ten second turbo s10 I traded so I would have a better daily for the hill country. I figured someone of your knowledge would be somewhat help in suggesting a decent head.

The 317s are stock except for the titanium retainers and leg dual 660 springs I installed on them. My issue with them is when I got the motor each head had a manifold bolt broke off in them and you can see where the person that had at before me broke ease outs off in each. Right now I am managing keeping the exhaust from leaking with the Dorman thing that helps clamp the rear of the manifold better.
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Old 11-29-2017, 06:02 AM   #6
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Also you are not really coming off dickish to me codyvette
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Old 11-29-2017, 08:21 AM   #7
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It's all good man. Get yourself some 706 castings so the combustion Chambers will be small. They will also be cheap. Have bigger stock valves cut into them and hand port them. Not a lot, just a little and let it eat.
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Old 11-29-2017, 10:25 AM   #8
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6thats what I was looking for I wasn't sure if getting a cnc port was worth it over and good hand port job
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Old 11-29-2017, 11:01 PM   #9
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There's a fellow named Lloyd Elliot in Dallas that will C&C them for $450 but I wouldn't spend the money. I'd just do some light cutting with a diagrinder.
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Old 12-03-2017, 02:54 PM   #10
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you have a phone number for him { Lloyd Elliot }
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Old 12-04-2017, 07:37 PM   #11
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Quote:
Originally Posted by one fast zo6 View Post
you have a phone number for him { lloyd elliot }
(972) 617-5671
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Old 12-05-2017, 10:37 AM   #12
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I like the 243 suggestion. Valve job, tiny bit of milling to bump compression a bit, and roll out. You could always go whole hog and get AI to do them for you, that and the required retune will make it feel like a new vehicle. You didn't say what your budget was for this so, that makes it tough to optimize a suggestion. I'll echo what Cody said about fast, cheap, and reliable...it's a priority question and he's giving you good info.
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Old 12-05-2017, 10:41 AM   #13
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Old 12-05-2017, 11:22 AM   #14
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how quick are you planning on going? 12s, 11s, 10s?
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Old 12-05-2017, 12:08 PM   #15
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That re stalled trailblazer ss circle d 3200 stall is garbage. Get you a real converter FTI or YANK 3600-4000 9.5in billet lock up. I promise it will change the way the car feel.
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Old 12-07-2017, 01:00 AM   #16
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Tune was done at a buddy's shop. Very conservative just to break it in, I don't like driving 200 plus miles at a time on much bigger than a the 3400 stall. When I mean daily it is my daily that I commute back and forth with from San Marcos to Baytown.

With the last ls1 243s and baby cam it had the car went 12.5 na on a nitrous tune with a tbss stall. I just dont feel like the car is as quick. Everyone else that has been in it says otherwise. Budget wise I'm good to about 1500 for heads.

AS far as stall goes I needed a stall quick and got what I could find on short notice.
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Old 12-07-2017, 08:51 PM   #17
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Circle D isn't just a restall and is good for the price point but Circle D does much better converters, they just cost more. I am not knocking Yank or FTI, I have just had great experience with Circle D.
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Old 12-07-2017, 09:00 PM   #18
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1500 will buy some really nice used aftermarket castings or a set of AI reworked 241's which also get great reviews.
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Old 12-08-2017, 09:56 AM   #19
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Circle D is a solid choice for converters, can't imagine that would be an issue unless you chose the wrong one for your combo.

Here's your ticket if the PTV works:
https://ls1tech.com/forums/parts-cla...6cc-heads.html

Let AI spec the head treatment for you, you'll be shocked the difference heads and retune will make on your combo. You may even stay in budget if you're lucky.

or just have yours worked:
http://advancedinduction.com/LSX/AiLSxCylinderHeads.php
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